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http://hdl.handle.net/2445/186418
Title: | Amplitude analysis of B+ -> J/psi phi K+ decays |
Author: | Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, V. LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Jan-2017 |
Publisher: | American Physical Society |
Abstract: | The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+K- decays is performed with a data sample of 3 fb(-1) of pp collision data collected at root s = 7 and 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into phi K+, and four J/psi phi structures are observed, each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with, but width much larger than, previous measurements of the claimed X(4140) state. The model includes significant contributions from a number of expected kaon excitations, including the first observation of the K*(1680)+ -> phi K+ transition. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.95.012002 |
It is part of: | Physical Review D, 2017, vol. 95, num. 012002, p. 1-28 |
URI: | http://hdl.handle.net/2445/186418 |
Related resource: | https://doi.org/10.1103/PhysRevD.95.012002 |
ISSN: | 2470-0010 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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